UFC 315 at the Bell Centre in Montréal delivered one of the biggest shakeups in recent welterweight history, as Jack Della Maddalena Maddalena pulled off a stunning upset over reigning champion Belal Muhammad.

Jack Della Maddalena beat Belal Muhammad via unanimous decision to wrest away the welterweight championship in the main event at UFC 315.

The UFC welterweight division has a new champion once again, as Jack Della Maddalena defeated Belal Muhammad by unanimous decision to claim the title in the main event of UFC 315 on Saturday. The victory extends Della Maddalena's win streak to 18 straight fights and creates new intrigue for the 170-pound division.

Saint Denis, who’s now finished each of his six UFC wins, was scheduled to face Joel Alvarez but got a new opponent when Alvarez sustained an injury. Prepolec had gone 4-1 in regional promotions since losing a decision to Austin Hubbard on a Fight Night show.

UFC 315 goes down in Montreal and there are two title fights that headline the card. In the main event, welterweight champion Belal Muhammad (24-3, 1 NC) takes on top contender Jack Della Maddalena (17-2).